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A single chip low power asynchronous implementation of an FFT algorithm for space applications

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4 Author(s)
Hunt, B.W. ; Dept. of Electr. & Comput. Eng., Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA ; Stevens, K.S. ; Suter, B.W. ; Gelosh, D.S.

A fully asynchronous fixed point FFT processor is introduced for low power space applications. The architecture is based on an algorithm developed by Suter and Stevens specifically for a low power implementation. The novelty of this architecture lies in its high localization of components and pipelining with no need to share a global memory. High throughput is attained using large numbers of small, local components working in parallel. A derivation of the algorithm from the discrete Fourier transform is presented followed by a discussion of circuit design parameters specifically those relevant to space applications. A survey of this application specific architecture is included with a detailed look at the design of the complex-valued Booth multiplier to demonstrate the design methodology of this project. Finally, simulation results based on layout extractions are presented and an outline for future work is given

Published in:

Advanced Research in Asynchronous Circuits and Systems, 1998. Proceedings. 1998 Fourth International Symposium on

Date of Conference:

30 Mar-2 Apr 1998